Take a look at this article from Jeffrey Powers:

Are Podcasters Going To Get Sued?

It's interesting that the granted patent claims priority to an invention from 1996. The complaint alleges that the defendants are infringing claim 31 of the patent (cited in the article). Defendants include Ace Broadcasting Company (Adam Carolla's distributor), Togi Entertainment (toginet.com), and howstuffworks.com. It will be interesting to see how the case unfolds.